import java.util.List;

// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
    public static void main(String[] args) {
        Test4 test = new Test4();
        List<List<Integer>> ret = test.combinationSum(new int[]{2,3,6,7}, 7);
        System.out.println(333);
    }
}